Abstract
By pots experiments,two rice cultivars of 'Yangdao 6'(Indica) and 'Jingdao 941'(Japonica) were used to study effects of nitrogen(N) treatments on rice seedling growth,caryopsis development and rice quality.The results showed that more N application at tillering stage can increase fresh and dry weights,node numbers,and heights of rice seedling.While more N added at booting stage can remarkably elevate photosynthetic rates of flag leaf and caryopsis,chlorophyll content and respiratory rate of caryopsis and husk,and the activities of catalase(CAT) and superoxide dismutase(SOD) in caryopsis.Moreover,an increase in grain quality was observed with more N added at booting stage.It was suggested that N application at various stages shows distinct effects on seedling growth,caryopsis development and rice quality.
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Claims 5
Claim · model-written summary
More nitrogen at tillering increased rice seedling fresh and dry weights, node numbers and heights.
- Taxon
- rice
Oryza sativae0 - Treatment
- more N application at tillering stagee0
- Outcome
- fresh and dry weights,node numbers,and heightse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“more N application at tillering stage can increase fresh and dry weights,node numbers,and heights of rice seedling.”
Claim · model-written summary
More nitrogen at booting increased photosynthetic rates of rice flag leaves and caryopses.
- Treatment
- more N added at booting stagee0
- Outcome
- photosynthetic rates of flag leaf and caryopsise0
- Direction
- elevatee0
Not reportedTaxonComparator
Verbatim
e0“more N added at booting stage can remarkably elevate photosynthetic rates of flag leaf and caryopsis”
Claim · model-written summary
More nitrogen at booting increased caryopsis chlorophyll content and caryopsis and husk respiratory rate.
- Treatment
- more N added at booting stagee0
- Outcome
- chlorophyll content and respiratory rate of caryopsis and huske0
- Direction
- elevatee0
Not reportedTaxonComparator
Verbatim
e0“more N added at booting stage can remarkably elevate photosynthetic rates of flag leaf and caryopsis,chlorophyll content and respiratory rate of caryopsis and husk”
Claim · model-written summary
More nitrogen at booting increased caryopsis catalase and superoxide dismutase activities.
- Treatment
- more N added at booting stagee0
- Gene
- catalase(CAT) and superoxide dismutase(SOD)e0
- Outcome
- activities of catalase(CAT) and superoxide dismutase(SOD)e0
- Direction
- elevatee0
Not reportedTaxonComparator
Verbatim
e0“more N added at booting stage can remarkably elevate photosynthetic rates of flag leaf and caryopsis,chlorophyll content and respiratory rate of caryopsis and husk,and the activities of catalase(CAT) and superoxide dismutase(SOD) in caryopsis.”
Claim · model-written summary
More nitrogen at booting increased rice grain quality.
Not reportedTaxonComparator
Verbatim
e0“an increase in grain quality was observed with more N added at booting stage.”
The same questions in other papers
tillage · growth · Oryza sativa (rice)Positive and negative results
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- negative
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See all 149 papers →nitrogen · growth · Oryza sativa (rice)Positive and negative results
401 papers in the same direction as this paper · 101 in the opposite direction · 8 reporting no difference from an alternative
- negative
- negative
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See all 511 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.